发明授权
US07652124B2 Rigid heterocyclic polymer, production process thereof, and fibers comprising the polymer 失效
刚性杂环聚合物,其制备方法和包含聚合物的纤维

Rigid heterocyclic polymer, production process thereof, and fibers comprising the polymer
摘要:
There are provided a rigid heterocyclic polymer comprising rigid recurring units such as units represented by the following formulae (a) and (b): wherein X is O, S or NH, a production process thereof, and fibers comprising the polymer.
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